According to the export C of A issued on 11th October 1930, G-ABHE had 16 x 7 Goodyear Air Wheels. These are bigger than the C3 / C100 wheel. The C2 has solid undercart so the only ‘give’ is in the tyre.
Incidentally the original wheels from G-ABHE were given to the Shuttleworth Collection in 1966.